<div class="translate show4ThU1 show4ThU1 hide4ThU3 hide4ThU4"
     id="evolution_info_ThU12"></div>

<div class="hidden translate hide4ThU1 hide4ThU1 show4ThU3 show4ThU4"
     id="evolution_info_ThU34"></div>

<div class="show4evolutionIsochron">

<p></p>
<translate class="legend"></translate>
<p></p>

<ol>
  <li>
    age = x &plusmn; y 
    <span class="show4model1 hide4model2 hide4model3"> (| z)</span>
    <p></p>
    where:
    <p></p>
    <table>
      <tr>
	<td>x:</td>
	<td class="translate" id="evolution_t"></td>
      </tr>
      <tr>
	<td>y:</td>
	<td>
	  <translate class="err"></translate> 
	  <translate class="12sigmaci"></translate>.
	</td>
      </tr>
      <tr class="show4model1 hide4model2 hide4model3">
	<td>z:</td>
	<td><translate class="err_disp"></translate></td>
      </tr>
    </table>
  </li>
  
  <li>
    <span class="hidden show4ThU1 show4ThU2">
      (<sup>234</sup>U/<sup>238</sup>U)<sub>i</sub>
    </span>
    <span class="hidden show4ThU3 show4ThU4">
      (<sup>230</sup>Th/<sup>232</sup>Th)<sub>i</sub>
    </span>
    = x &plusmn; y
    <span class="show4model1 hide4model2 hide4model3">(| z)</span>
    <p></p>
    where:
    <p></p>
    <table>
      <tr>
	<td>x:</td>
	<td class="translate" id="evolution_x"></td>
      </tr>
      <tr>
	<td>y:</td>
	<td>
	  <translate class="err"></translate> 
	  <translate class="12sigmaci"></translate>.
	</td>
      </tr>
      <tr class="show4model1 hide4model2 hide4model3">
	<td>z:</td>
	<td><translate class="err_disp"></translate></td>
      </tr>
    </table>
  </li>

  <li class="show4model1 hide4model2 hide4model3">
    MSWD = x, p(&chi;<sup>2</sup>) = y 
    <p></p>
    where:
    <p></p>
    <table>
      <tr>
	<td>x:</td>
	<td class="translate" id="evolution_mswd_x"></td>
      </tr>
      <tr>
	<td>y:</td>
	<td class="translate" id="evolution_mswd_y"></td>
      </tr>
    </table>
  </li>

  <li class="hide4model1 hide4model2 show4model3">
    dispersion = x &plusmn; y
    <p></p>
    where:
    <p></p>
    <table>
      <tr>
	<td>x:</td>
	<td class="translate" id="evolution_omega"></td>
      </tr>
      <tr>
	<td>y:</td>
	<td>
	  <translate class="err"></translate>
	  <translate class="12sigmaci"></translate>.
	</td>
      </tr>
    </table>
  </li>  

</ol>

</div>

<p></p>
<translate class="references"></translate>
<p></p>

Ludwig, K.R., 2003. Mathematical–statistical treatment of data and
errors for <sup>230</sup> Th/U geochronology.
<i>Reviews in Mineralogy and Geochemistry</i>, 52(1), pp.631-656.
